Crankcase emission control system for an internal combustion eng

Details Crankcase emission control system for an internal combustion eng Crankcase emission control system for an internal combustion eng

1986-10-20

1987-12-15

Cuchlinski, Jr., William A.

Internal-combustion engines

Charge forming device

Crankcase vapor used with combustible mixture

F02B 2502

Patent

active

047125322

ABSTRACT:
An air intake passage leads to a combustion chamber. A throttle valve is disposed in the air intake passage. A first gas passage connects a crank chamber to a point of the air intake passage downstream of the throttle valve. A control valve is disposed in the first gas passage. A second gas passage connects the crank chamber to a point of the air intake passage upstream of the throttle valve. A communication passage connects the second gas passage to a point of the first gas passage between the control valve and the crank chamber.

REFERENCES:
patent: 3661128 (1972-05-01), Eshelman
patent: 4269607 (1981-05-01), Walker
patent: 4541399 (1985-09-01), Tanaka et al.
patent: 4603673 (1986-08-01), Hiraoka et al.
patent: 4656991 (1987-04-01), Fukuo et al.

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